{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-53090", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-11-19T17:17:24.981Z", "datePublished": "2024-11-21T18:17:07.366Z", "dateUpdated": "2026-08-05T11:43:33.711Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:43:33.711Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nafs: Fix lock recursion\n\nafs_wake_up_async_call() can incur lock recursion. The problem is that it\nis called from AF_RXRPC whilst holding the ->notify_lock, but it tries to\ntake a ref on the afs_call struct in order to pass it to a work queue - but\nif the afs_call is already queued, we then have an extraneous ref that must\nbe put... calling afs_put_call() may call back down into AF_RXRPC through\nrxrpc_kernel_shutdown_call(), however, which might try taking the\n->notify_lock again.\n\nThis case isn't very common, however, so defer it to a workqueue. The oops\nlooks something like:\n\n BUG: spinlock recursion on CPU#0, krxrpcio/7001/1646\n lock: 0xffff888141399b30, .magic: dead4ead, .owner: krxrpcio/7001/1646, .owner_cpu: 0\n CPU: 0 UID: 0 PID: 1646 Comm: krxrpcio/7001 Not tainted 6.12.0-rc2-build3+ #4351\n Hardware name: ASUS All Series/H97-PLUS, BIOS 2306 10/09/2014\n Call Trace:\n \n dump_stack_lvl+0x47/0x70\n do_raw_spin_lock+0x3c/0x90\n rxrpc_kernel_shutdown_call+0x83/0xb0\n afs_put_call+0xd7/0x180\n rxrpc_notify_socket+0xa0/0x190\n rxrpc_input_split_jumbo+0x198/0x1d0\n rxrpc_input_data+0x14b/0x1e0\n ? rxrpc_input_call_packet+0xc2/0x1f0\n rxrpc_input_call_event+0xad/0x6b0\n rxrpc_input_packet_on_conn+0x1e1/0x210\n rxrpc_input_packet+0x3f2/0x4d0\n rxrpc_io_thread+0x243/0x410\n ? __pfx_rxrpc_io_thread+0x10/0x10\n kthread+0xcf/0xe0\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x24/0x40\n ? __pfx_kthread+0x10/0x10\n ret_from_fork_asm+0x1a/0x30\n " } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:N - The bug is reached from the rxrpc I/O thread processing received network data packets (rxrpc_input_packet → rxrpc_input_split_jumbo → rxrpc_notify_socket) on AFS calls carried over RxRPC/UDP, which is routable across networks; a remote AFS server or packet-injecting attacker triggers it.\nAC:L - Triggering needs the async_work already queued and the dropped ref to be the last one, but an attacker can flood jumbo data packets to pile up notifications and repeatedly drive this window; per the choose-higher rule this is Low.\nPR:N - The trigger is remote network packets processed in the kernel's packet-receive path; the attacker needs no account or privileges on the target host.\nUI:N - The vulnerable async paths (server GetCapabilities probes and server-initiated CM/callback calls) fire automatically as part of normal AFS operation, so no victim action is required at exploit time.\nS:U - The deadlock/crash is confined to the kernel that owns the affected code; no security boundary (VM/IOMMU/sandbox) is crossed.\nC:N - This is a spinlock self-recursion with no out-of-bounds access or freed-object reuse, so no memory contents are exposed.\nI:N - The bug provides no write primitive and corrupts no data; it only deadlocks a lock, so integrity is unaffected.\nA:H - The recursion deadlocks (or BUG-splats) the krxrpcio I/O thread while holding the notify spinlock, hanging all rxrpc/AFS packet processing and crashing/wedging the kernel." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/afs/internal.h", "fs/afs/rxrpc.c" ], "versions": [ { "version": "20acbd9a7aeee0b0af7107f3de791a52c949f3ac", "lessThan": "d7cbf81df996b1eae2dee8deb6df08e2eba78661", "status": "affected", "versionType": "git" }, { "version": "20acbd9a7aeee0b0af7107f3de791a52c949f3ac", "lessThan": "610a79ffea02102899a1373fe226d949944a7ed6", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/afs/internal.h", "fs/afs/rxrpc.c" ], "versions": [ { "version": "4.15", "status": "affected" }, { "version": "0", "lessThan": "4.15", "status": "unaffected", "versionType": "semver" }, { "version": "6.11.9", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "6.11.9" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "6.12" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/d7cbf81df996b1eae2dee8deb6df08e2eba78661" }, { "url": "https://git.kernel.org/stable/c/610a79ffea02102899a1373fe226d949944a7ed6" } ], "title": "afs: Fix lock recursion", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2024-53090", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2025-10-01T20:11:33.834587Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-674", "description": "CWE-674 Uncontrolled Recursion" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T20:17:13.815Z" } } ] } }